42 lines
1.5 KiB
HTML
42 lines
1.5 KiB
HTML
<!DOCTYPE html>
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<link rel=author href="mailto:jarhar@chromium.org">
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<link rel=help href="https://github.com/whatwg/html/pull/9093">
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<link rel=help href="https://drafts.csswg.org/css-position-4/#overlay">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<title>CSS Position Test: User agent style for overlay</title>
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<style>
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div {
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overlay: auto;
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}
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</style>
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<body>
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<script>
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test(() => {
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const div = document.createElement('div');
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document.body.appendChild(div);
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div.style.overlay = 'auto';
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assert_equals(getComputedStyle(div).overlay, 'none');
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}, 'HTML elements should have overlay:none !important from the user-agent.');
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test(() => {
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const svg = document.createElement('svg');
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document.body.appendChild(svg);
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svg.style.overlay = 'auto';
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assert_equals(getComputedStyle(svg).overlay, 'none');
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}, 'SVG elements should have overlay:none !important from the user-agent.');
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test(() => {
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const nullNamespace = document.createElementNS(null, 'div');
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document.body.appendChild(nullNamespace);
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assert_equals(getComputedStyle(nullNamespace).overlay, 'none');
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}, 'Null namespace elements should have overlay:none !important from the user-agent.');
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test(() => {
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const weirdNamespace = document.createElementNS('hello world', 'div');
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document.body.appendChild(weirdNamespace);
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assert_equals(getComputedStyle(weirdNamespace).overlay, 'none');
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}, 'Arbitrary namespace elements should have overlay:none !important from the user-agent.');
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</script>
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